Design, construction,

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Design, construction, unit testing

• Software Engineering
• Semester Project
• Chih-Hong Jeng Farn Wang
• fall 2006

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Deadline and what you need to prepare

• Deadline 2006/11/21 (by Prof. Wangs schedule)
• It seems to be difficult to finish it on time ?
• You have to ask for sure.
• What you need to prepare for submission
• A demonstration of your current progress, i.e.,
  your program must run in some way
• A written report specifying your functionalities,
  a brief manual.
• Your code, your test data.

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Implementation

• Problems relating to Rational Rose
• Lack of integration with current software
  developing IDE.
• You have to write your code outside Rose.
• When you use Java as your developing platform,
  the code generation and reverse engineering
  requires IBM VisualAge
• VisualAge is totally out of date, but you can
  still find it.
• Not included in IBM Academic Initiative, use
  trial version.
• Now everyone uses Eclipse, Netbeans, Jbuilder or
• Rational Software Architect support the
  integration of Java into Eclipse.

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So

• If you are using Java platform, I encourage you
  to switch your platform into IBM XDE developer
  for Java.
• It has Eclipse bundled in it.
• Although it remains an older product.
• But Im trying to import Rose project into XDE ?
• What about the one using C?
• Yes, it supports the translation from model to
  standard C and Visual C 6.0
• But I think that you will not use those old
  tools.

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Good Gospel!

• You may use what ever IDE you like to implement
  your code.
• Use UML as your guideline toward your
  implementation.
• As you submit your code, you may have to spend
  some time describing the relation between your
  code and your diagram.
• But make sure that you perform unit testing.
• In Java, this is achieved by using JUnit.

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JUnit

• JUnit is a testing framework. By applying the
  tools it offered, you may reduce the probability
  writing wrong test programs.
• Its a tool enabling you to perform unit testing
  with ease.
• You dont have to use system.out.println(?)
• It has been bundled in various IDEs.
• Java NetBeans, Borland JBuilder, Eclipse
• In JUnit you have to "Keep the bar green to keep
  the code clean."

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Using JUnit to check correctnessSample GCD
calculator
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A glance of Netbeans IDE
Main part of calculating GCD
Appearance of window
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GCD.java

• public class GCD
• / Creates a new instance of GCD /
• public GCD()
• public int use_gcd(int num1, int num2)
  
• int r 0
• while(num2 ! 0)
• r num1 num2
• num1 num2
• num2 r
• return num1

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Tools ? Create JUnit tests
We want to generate JUnit test case template of
GCD.java
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The content of GCDTest.java (All these contents
are generated automatically)
Modify it based on your understanding of the GCD
module!
// Assertion Check if the expected result and
generated result are the same!
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A simple modification of test cases
Note that all these fixtures can be managed.
Visit www.Junit.org for more!
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Execute the Unit Test
When the word is green, it means that it
passes When the word is red, it means that it
fails.
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End